A micro-tube vibration type spherical demister

Abstract

This invention discloses a microtube vibrating spherical demister, belonging to the technical field of microtube demisters. It includes an outer mounting ring, a microtube vibration unit, a liquid cooling module, a flow-guiding base, a demister filter element, and end caps. The flow-guiding base features a high-frequency vibrating spring for pre-vibration and pre-treatment of the flue gas. The microtube vibration unit incorporates an eccentric wheel vibrating ball to generate high-frequency vibration, and the ball achieves centrifugal gas-liquid separation through a micro-separation tube. The liquid cooling module combines flue gas condensation enhancement with spray self-cleaning functions. A dust concentration sensor linked to a microcontroller enables intelligent self-cleaning. This invention employs vibration resonance superposition and spherical rotation with full-area spray for synergistic descaling, resulting in high separation efficiency and low operating resistance. The modular assembly facilitates maintenance and replacement, making it suitable for various wet flue gas conditions in boilers, metallurgy, and chemical industries. It solves the problems of easy clogging and incomplete cleaning in existing microtube demisters, effectively inhibiting microtube clogging and achieving efficient and long-lasting demisting.

Description

Technical Field

[0001] This invention belongs to the field of microtube demister technology, and more specifically, relates to a microtube vibrating spherical demister. Background Technology

[0002] The working principle of a demister is mainly to force the airflow to change direction and use inertia to throw out water droplets. Currently, the common types of demisters are baffle demisters, tube bundle demisters, and microtube bundle demisters. Among them, baffle demisters have low separation efficiency, while tube bundle demisters are prone to causing dust to adhere to the guide impeller, resulting in clogging and increased resistance. The core structure of a microtube bundle demister is a modular device composed of a large number of micro separation tube units connected in parallel. The processing capacity of a single micro separation tube is limited, so in practical applications, thousands of micro separation tubes need to be combined into an "integrated module". These modules are usually made into rhomboid, hexagonal, or rectangular tube sheet structures.

[0003] Microtube demisters primarily improve gas-liquid separation efficiency by significantly reducing the diameter of individual separation tubes. Their core advantage lies in their ability to significantly improve gas-liquid separation while drastically reducing operating energy consumption. However, their limitations are mainly reflected in the high risk of clogging and the difficulty in cleaning and unblocking all micro-separation tubes, resulting in limited cleaning and unblocking effects.

[0004] In view of this, the applicant proposes a new improvement scheme based on the original microtube demister technology, which integrates the micro-separation tube module into a sphere, with several micro-separation tubes arranged radially along the sphere, and uses a vibrator installed inside the sphere to clear blockages and unclog the separation tubes. Summary of the Invention

[0005] The main objective of this invention is to provide a microtube vibrating spherical demister, which aims to solve the problems of easy clogging and limited cleaning and unblocking effects of current microtube demisters.

[0006] To achieve the above objectives, the present invention provides a microtube vibrating spherical demister, comprising: An outer mounting ring is provided, with a demisting filter element inside. The bottom of the outer mounting ring is provided with a sealing end cap, and the top is provided with an end cap. Several microtube vibration units are densely arranged in two layers on the upper and lower end faces of the demisting filter element. Each microtube vibration unit is suitable for free rotation and generates high-frequency vibration. The liquid cooling module is connected to the demisting filter at the bottom and to the end cap at the top. The liquid cooling module is connected to an external water source and is suitable for spraying water upward through the end cap. The drainage base is located inside the outer mounting ring and is positioned between the demister filter element and the sealing end cap; The smoke and dust are accelerated into the microtube vibration unit inside the demisting filter element through the flow base, and after being collected inside the microtube vibration unit, they flow out through the liquid cooling module.

[0007] Furthermore, the microtube vibration unit includes: The spherical integrated module has a fixed shaft tube at its axis, and the shaft tube is rotatably installed inside the demisting filter element. The vibrating ball has a rotary joint on its outside along the axis. The rotary joint is slidably inserted into the shaft tube, and a spring is sleeved on the rotary joint. One end of the spring abuts against the vibrating ball, and the other end abuts against the inner wall of the ball integrated module. Several micro-separation tubes are inserted radially and evenly into the outer surface of the spherical integrated module; The nominal diameter of the micro-separation tube is usually no more than 100 mm, and it is equipped with spiral blades inside.

[0008] Furthermore, the vibrating ball includes a fixed shaft, an eccentric wheel, a hub motor, and a spherical shell. The fixed shaft is fixedly installed inside the spherical shell and is located at the axis of the spherical shell. A hub motor is mounted on the fixed shaft, which drives the eccentric wheel to rotate around the fixed shaft.

[0009] Furthermore, the outer mounting ring includes a receiving sleeve, a flange ring, and countersunk holes. Countersunk holes are provided at both the upper and lower ends of the receiving sleeve, and a flange ring is provided in the middle of the receiving sleeve.

[0010] Furthermore, the demisting filter element includes: The upper mounting plate has multiple conductive grooves arranged parallel to each other on its upper end face, and a lower mounting plate is symmetrically arranged below the upper mounting plate. A number of ball grooves are evenly distributed between two adjacent conductive grooves. Each ball groove has a pair of shaft grooves at both ends, and the pair of shaft grooves intersects with the two adjacent conductive grooves. The lower mounting plate and the upper mounting plate have the same structure and are connected by a ball groove. A conductor connected to the power supply is embedded in the conductive groove, and a shaft tube is rotatably installed in the ball groove. The conductor is suitable for supplying power to the hub motor through the shaft tube.

[0011] Furthermore, the end cap includes a cover body, a water inlet pipe, and a smoke outlet. The top of the liquid cooling module is sealed with a cover body, and the end face of the cover body is provided with several smoke outlets. The several smoke outlets pass through the liquid cooling module and are aligned with several ball grooves. Multiple nozzles are mounted on the upward-facing cover. The nozzles are connected to the liquid cooling module, which is connected to the water inlet pipe. The water inlet pipe is installed downward-facing on the cover. Multiple units of this invention are connected in series vertically inside the desulfurization tower. The lower layer is the main coarse separation unit, and the upper layer is the fine and deep demisting unit. Two-stage spherical microtube vibration units, combined with liquid cooling modules for gradient cooling, are suitable for wet desulfurization flue gas with high humidity and high droplet content, improving the outlet droplet removal efficiency to over 99.8%. Furthermore, the liquid cooling module includes: The liquid cooling housing has mounting holes on the top, through which the liquid cooling housing is sealed to the end cover. Several speed-increasing tubes are integrally formed and connected to the liquid cooling shell. The speed-increasing tubes are aligned with several ball grooves. A guide hole is provided between two adjacent speed-increasing tubes, and the guide hole is connected to the water inlet pipe. There is a gap between the liquid cooling shell and several speed-increasing tubes, and the guide hole is connected to the nozzle through the gap.

[0012] Furthermore, each speed-increasing tube is equipped with a dust concentration sensor, which is connected to the microcontroller terminal.

[0013] Furthermore, the drainage base includes a base body, square holes, and a high-frequency vibrating spring drainage groove. The base body is provided with several square holes, which are aligned with several ball grooves. A high-frequency vibrating reed is installed diagonally inside a single square hole. After the flue gas passes through the high-frequency vibrating reed, it generates high-frequency vibration and resonates with the vibrating ball.

[0014] Furthermore, the demisting filter is made of stainless steel.

[0015] The beneficial effects of applying the technical solution of this invention are as follows: This microtube vibratory spherical demister technology adopts a self-vibrating resonance synergistic unblocking approach, with double-layer multi-level vibration superposition. The spherical microtube unit can rotate freely 360°. The impact force of the flue gas drives the sphere to rotate slowly, allowing each micro-separation tube to take turns receiving the flue gas, avoiding long-term ash accumulation on one side. At the same time, high-pressure cleaning water fully covers and washes all spherical units, and the dirt dislodged by vibration can be discharged directly downward with the water flow. This effectively makes up for the problem that traditional fixed plate microtube bundles rely solely on manual flushing, are prone to clogging, and have limited cleaning and unblocking effects. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 A perspective view of the microtube vibration type spherical demister provided by the present invention; Figure 2 A three-dimensional view of the microtube vibration unit provided by the present invention; Figure 3 A perspective view of the drainage base provided by the present invention; Figure 4 A perspective view of the liquid cooling module provided by the present invention; Figure 5 A perspective view of the end cap provided by the present invention; Figure 6 This is a schematic diagram of the dust removal principle provided by the present invention; Figure 7 A perspective view of the demisting filter element provided by the present invention; Figure 8 A perspective view of the outer mounting ring provided by the present invention; Figure 9 A perspective view of the vibrating ball provided by the present invention; The above figures include the following reference numerals: 1. Outer mounting ring; 11. Receiving sleeve; 12. Flange ring; 13. Countersunk hole; 2. End cap; 21. Cover body; 22. Water inlet pipe; 23. Smoke outlet; 3. Microtube vibration unit; 31. Spherical integrated module; 32. Shaft tube; 33. Vibrating ball; 331. Fixed shaft; 332. Eccentric wheel; 333. Hub motor; 334. Spherical shell; 34. Spring; 35. Micro-separation tube; 36. Rotary joint; 4. Nozzle; 5. Liquid cooling module; 51. Liquid cooling shell; 52. Guide hole; 53. Speed ​​increasing tube; 54. Mounting hole; 6. Demisting filter element; 61. Upper mounting plate; 62. Lower mounting plate; 63. Spherical groove; 64. Shaft groove; 65. Conductive groove; 7. Drainage base; 71. Base body; 72. Square hole; 73. High-frequency vibration spring; 74. Drainage groove; 8. Sealing end cap. Detailed Implementation

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0019] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0020] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in sequences other than those illustrated or described herein.

[0021] Furthermore, the terms “including” and “having” and any variations thereof are intended to cover non-exclusive inclusion, such as a process, method, system, product, or apparatus that includes a series of steps or units, which is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0022] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., may be used here to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figure. It should be understood that spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device as described in the figure.

[0023] For example, if a device in the accompanying drawings is inverted, a device described as "above" or "on top of" other devices or structures will subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below". The device may also be positioned differently, rotated 90 degrees, or in other orientations, and the spatial relative descriptions used herein will be interpreted accordingly.

[0024] Please refer to this as well. Figures 1 to 9 As shown, this invention provides a microtube vibrating spherical demister, focusing primarily on the combination method of the micro-separation tube integrated module. Thousands of micro-separation tubes are combined into a rotatable spherical module and installed within the entire machine. This not only allows droplets and particles to be captured by the tube wall after traveling only a short distance using the micro-separation tubes, but also enables the airflow carrying droplets to continuously reverse and collide within the spherical module, causing the droplets to impact the inner wall of the module's sphere due to inertia, further improving the demisting effect. The technical solution provided by this invention will be described in detail below with specific embodiments.

[0025] In a specific embodiment of this invention, the entire micro-tube vibrating spherical demister is assembled in layers from bottom to top. The sealing end cap 8 is located at the bottom layer, and the flow base 7, demister filter element 6, liquid cooling module 5, and end cap 2 are stacked sequentially on top, so that all core components are uniformly housed inside the outer mounting ring 1, forming an integrated cylindrical demister unit. In actual use, the entire demister can be directly connected to flue gas pipelines such as desulfurization towers and wet dust removal flues through the flange ring 12 set in the middle of the outer mounting ring 1. The receiving sleeve 11 of the outer mounting ring 1 has countersunk holes 13 at the upper and lower ends, and the entire unit is sealed and fixed with matching bolts to prevent flue gas from escaping from the gaps in the cylinder. Under basic operating conditions, flue gas containing droplets and fine dust enters the flow base 7 from the central channel of the bottom sealed end cover 8. After being accelerated and rectified by the flow base 7, it is evenly distributed to each layer of microtube vibration unit 3 inside the demister filter element 6. The flue gas completes gas-liquid separation inside the spherical microtube vibration unit 3. The separated clean flue gas passes upward through the liquid cooling module 5 and is finally discharged outward from the smoke outlet 23 of the end cover 2. The liquid cooling module 5 is externally connected to circulating cooling water. On the one hand, it cools the high-temperature flue gas, promotes the condensation and growth of tiny droplets, and improves the separation efficiency. On the other hand, it sprays cleaning water downward through the top nozzle 4, which, together with the vibration unit, achieves automatic clearing of blockages, fundamentally solving the defects of traditional microtube bundle demisters that are prone to dust accumulation and blockage, and incomplete coverage by manual cleaning.

[0026] In this embodiment, the outer mounting ring 1 flange structure can be modified to a horizontal lateral flange, and the whole unit can be horizontally embedded in the horizontal flue to adapt to the boiler tail flue with limited space. A flow guide baffle is added inside the flow base 7 to adapt to the horizontal airflow direction, while the functions of the vibration unit and spray system remain unchanged.

[0027] In this embodiment, the basic specifications of the demister are selected from the 304 stainless steel integral molded demister filter element 6, which is suitable for the wet desulfurization flue gas treatment of small and medium-sized 20t / h coal-fired boilers. The single unit can handle a flue gas volume of 15000m³ / h. The nominal diameter of the micro-separation tube is 50mm, the outer diameter of the spherical integrated module is 80mm, and the micro-tube vibration unit is arranged in two staggered layers with a layer spacing of 60mm. It can stably achieve the ultra-low emission standard of outlet droplet concentration below 20mg / m³.

[0028] In a specific embodiment of this invention, the principle of the conductive support for the demisting filter element and the installation of the microtube vibration unit is emphasized. Specifically, the demisting filter element 6 consists of a symmetrically arranged upper mounting plate 61 and a lower mounting plate 62. Uniformly distributed ball grooves 63 are formed between the two plates to serve as mounting chambers for the microtube vibration unit 3. Shaft grooves 64 are symmetrically arranged at both ends of the ball grooves 63 for mounting the shaft tube 32. Multiple conductive grooves 65 are arranged parallel to each other between adjacent ball grooves 63, with copper conductive conductors pre-embedded within the grooves. The shaft tube 32 acts as a rotary conductive joint, allowing an external power source to form a conductive circuit through the conductive grooves 65 and the shaft tube 32, continuously supplying power to the hub motor 333 inside the sphere. This eliminates the need for separate wiring, simplifies the internal wiring structure, and avoids short circuits caused by high-temperature flue gas corrosion. During the assembly of the demister, the two ends of the shaft tube 32 of the microtube vibration unit 3 are respectively inserted into the shaft grooves 64 of the upper and lower mounting plates, so that the spherical integrated module 31 can rotate freely 360°. The impact of flue gas on the sphere can generate rotation, which, together with the high-frequency vibration of the internal vibrating ball 33, forms a dual self-cleaning mode of "centrifugal rotation" and "high-frequency vibration", which can effectively unclog the micro-separation tube on the microtube vibration unit 3 and prevent the resistance from increasing due to blockage.

[0029] This embodiment focuses on explaining the working principle of the microtube vibration unit's rotation, vibration-based unblocking, and gas-liquid separation. The microtube vibration unit 3 is the core separation and self-cleaning component of this invention. Dozens of micro-separation tubes 35 are radially and evenly inserted into the spherical integrated module 31. The inner diameter of each micro-separation tube is uniformly controlled within the range of 20–100 mm. Helical blades are pre-installed inside. After the flue gas enters the micro-separation tube, it undergoes a centrifugal rotational motion along the helical blades. Droplets and solid particles are initially intercepted and separated by inertial impact against the tube wall. Under the action of centrifugal force, the tiny droplets collide and coalesce into larger droplets, which then converge downwards along the tube wall. A rotating joint 36 matching the vibration ball 33 is slidably inserted inside the central shaft tube 32 of the sphere. A spring 34 is sleeved on the outside of the rotating joint 36. The two ends of the spring respectively abut against the inner wall of the vibration ball 33 and the spherical integrated module 31, forming an elastic buffer structure. The high-frequency vibration force generated by the vibration ball 33 can be transmitted without attenuation to the entire sphere and all micro-separation tubes 35 through the spring 34. At the same time, the spring can buffer the radial offset during the sphere's rotation, preventing the shaft tube from jamming. The vibrating ball 33 integrates a fixed axis 331, a hub motor 333, and an eccentric wheel 332. When the hub motor 333 is energized, it drives the eccentric wheel 332 to rotate eccentrically at high speed around the fixed axis 331. This eccentric rotation generates high-frequency micro-amplitude vibrations of 1500–3000Hz. The vibration force penetrates the spherical shell 334 and is transmitted to the spherical integrated module 31 and the inner walls of all micro-separation tubes, continuously shaking off dust, slurry, and liquid films adhering to the tube walls, preventing blockage of the micro-tube channels. At the same time, the vibration waves generated by the high-frequency springs of the lower drainage base 7 are transmitted upwards, forming a resonance superposition with the vibrating ball 33 to further amplify the unblocking effect. In addition, as the flue gas continuously impacts the outer wall of the spherical module, the spherical integrated module 31 slowly rotates along the axis tube 32, allowing each radial micro-separation tube 35 to alternately switch its air intake angle, avoiding long-term dust accumulation on one side of the tube wall.

[0030] In one extended embodiment of this invention, optionally, the demisting filter element 6 can be modularized into 4 independent filter element modules. Each module is equipped with an independent conductive groove terminal block, and a corresponding maintenance door is opened on the side wall of the outer mounting ring 1. When a single module is blocked or damaged, it can be pulled out and replaced individually without shutting down the entire machine for disassembly. This is suitable for desulfurization towers in large power plants with continuous production, significantly reducing equipment downtime for maintenance. As for the filter element material, according to conventional flue gas procurement standards, 304 stainless steel sheet is preferred for stamping. For flue gas with high temperature and corrosion, 316L stainless steel can be used instead. For low-temperature clean flue gas, fiberglass composite sheet can be used, taking into account both lightweight and corrosion resistance requirements.

[0031] In a specific embodiment of the present invention, the diversion base 7 serves as a primary distribution and pre-vibration pretreatment component for flue gas. Square holes 72, corresponding one-to-one with the upper spherical grooves 63, are uniformly opened on the surface of the base 71. High-frequency vibrating springs 73 are fixed diagonally within the square holes 72. An inclined diversion groove 74 is pre-reserved inside the base 71. The flue gas flow from the bottom enters through the diversion groove 74, achieving initial acceleration and reducing airflow turbulence. This ensures uniform flue gas flow entering each microtube vibration unit 3, preventing excessively high local flow velocities that could cause secondary entrainment of droplets. When the flue gas passes through the square holes 72, it impacts the high-frequency vibrating springs 73 at high speed. The springs, impacted by the airflow, continuously generate high-frequency micro-vibrations above 2000Hz, which can pre-break up large particles of sludge in the flue gas. Simultaneously, the flue gas carries continuous vibration waves upwards, forming a resonance superposition effect with the upper vibrating spheres 33, significantly improving the removal effect of deposits on the pipe wall.

[0032] Optionally, in this embodiment, the hub motor 333 is equipped with a frequency converter control module. The microcontroller terminal automatically adjusts the motor speed based on feedback data from the dust concentration sensor. Under low dust conditions, the vibration frequency is lowered to reduce energy consumption; under high blockage risk conditions, the eccentric wheel speed is increased to increase the vibration amplitude and enhance blockage removal. For chemical flammable and explosive organic waste gas conditions, the hub motor 333 is replaced with an explosion-proof motor, all metal parts of the machine are electrostatically grounded, the spray water circuit uses anti-static pipes, and the conductive tank conductors are equipped with insulating explosion-proof sleeves to eliminate the risk of electrical spark ignition.

[0033] In one optional embodiment, for high-dust conditions, such as metallurgical sintering and waste incineration with high dust content flue gas, the high-frequency vibrating reed 73 can be replaced with a double-layer staggered reed group, and a micro electromagnetic vibrator can be added. The microcontroller terminal controls the start and stop of the vibrator. When the dust concentration sensor built into the speed-increasing tube 53 detects that the difference between the inlet and outlet dust exceeds the threshold, the vibrator is automatically turned on to amplify the vibration amplitude of the base, shaking off large dust particles in advance and reducing the ash accumulation rate on the inner wall of the micro-separation tube. For chemical acidic flue gas conditions, the entire diversion base 7 is integrally injection molded from PP polypropylene, and the surface of the reed is coated with a polytetrafluoroethylene anti-stick coating to avoid corrosion by acidic media and dust adhesion and agglomeration, thus extending the service life of resonance cleaning.

[0034] In some embodiments, the micro-separation tube is a detachable structure. Specifically, the micro-separation tube 35 and the sphere integration module 31 adopt a threaded plug-in structure. When a single tube is severely blocked, it can be unscrewed out for cleaning or replacement without replacing the entire sphere unit, thus reducing the cost of consumables and maintenance. The inner wall of the micro-separation tube can be provided with hydrophilic flow guiding textures to promote the rapid downward flow and discharge of the separated liquid, thereby reducing liquid film retention.

[0035] In some embodiments, the liquid cooling module 5 is sandwiched between the demisting filter element 6 and the end cap 2. The top of the liquid cooling shell 51 is sealed and locked to the end cap 2 through the mounting hole 54. At the same time, multiple speed-increasing tubes 53 are integrally formed at the bottom of the liquid cooling shell 51. The speed-increasing tubes 53 are precisely aligned with the ball groove 63 below. After the flue gas is separated by the micro-separation tube, it passes through the speed-increasing tubes 53 to further increase the flow rate and accelerate the gas-liquid two-phase stratification. An annular cooling water cavity is reserved between the liquid cooling shell 51 and the outer wall of the speed-increasing tubes. The water inlet pipe 22 of the end cap 2 is connected to the external circulating cooling water. The cooling water fills the annular cavity through the guide hole 52 and continuously wraps the outer wall of the speed-increasing tube to achieve indirect flue gas cooling. After the high-temperature flue gas encounters the cooling, the internal water vapor condenses rapidly, and the tiny droplets absorb moisture and grow, which greatly improves the collection efficiency of the microtube unit. The guide hole 52 connects the cooling water chamber to the nozzle 4 on the top of the cover. The cooling water can be switched to the cleaning water mode. After the external water source is introduced into the cleaning water, the water flows through the guide hole 52 and the cavity gap to each nozzle 4. The nozzle sprays downward in all directions. The water flow covers each group of spherical microtube vibration units, washing the dust and mud stripped by vibration to the bottom drainage base 7. The waste liquid is discharged from the bottom drain port of the equipment, thereby achieving the technical effect of dual cleaning by vibration and water flushing.

[0036] In this implementation, a dust concentration sensor is embedded inside the speed increaser tube 53. The sensor collects the concentration of particulate matter in the flue gas after passing through the microtube unit in real time, and the data is transmitted to the external microcontroller terminal in real time. When the sensor detects that the dust concentration at the outlet continues to rise, it determines that the microtube is blocked. The terminal simultaneously triggers two cleaning programs: one is to increase the vibration frequency of the hub motor, and the other is to automatically open the spray flushing water path, forming an intelligent closed-loop self-cleaning control logic.

[0037] In terms of control logic, a dual-water-path switching method is adopted to achieve cleaning and drainage of the liquid-cooled module 5. Specifically, the liquid-cooled module 5 is equipped with two independent water paths. One path continuously supplies low-temperature cooling water to maintain the cooling and demisting function, while the other path is independently connected to high-pressure cleaning water. Normally, only the cooling water path is turned on, and the high-pressure water path is automatically switched on periodically for deep flushing. The cooling and cleaning functions do not interfere with each other and do not require shutdown to cut off the cooling. The cooling water outlet is connected to an external heat exchanger to absorb the heat from the flue gas for plant heating, desulfurization agent heating, and recovery of waste heat from the flue gas, reducing the overall energy consumption of the entire equipment and adapting to the long-term continuous operation conditions of large thermal power plants.

[0038] In some embodiments, the end cover 21 integrates three functions: smoke exhaust, water inlet, and spraying. Multiple through-holes 23 are formed on the end face of the cover, with the upper and lower ends aligned with the liquid-cooled module speed-increasing tube 53 and the demisting filter element ball groove 63, ensuring smooth vertical upward flow of flue gas without localized eddy dust accumulation. Optionally, in this embodiment, the flange is equipped with quick-release clips, allowing for easy removal of the internal liquid-cooled module and filter element assembly during maintenance. Furthermore, a removable perforated flow equalizer is added above the smoke exhaust holes 23. The flow equalizer's aperture gradually changes radially to balance the top exhaust velocity, preventing secondary entrainment of localized droplets due to flue gas deviation, and further reducing the concentration of dust emissions at the outlet.

[0039] In some embodiments, multiple sets of wide-angle nozzles 4 are arranged at the upward protruding position of the cover 21. The nozzles are vertically downward and aimed at each of the lower spherical microtube vibration units, ensuring that the spray water covers all micro-separation tubes without dead angles. The water inlet pipe 22 is fixed vertically downward at the center of the cover and is connected to two water supply pipes: external cooling water and cleaning water. The pipe interfaces are equipped with solenoid valves, and the water circuit is automatically controlled by a microcontroller terminal, eliminating the need for manual switching. During assembly, the end cover 2, the liquid cooling module 5, and the top of the outer mounting ring 1 are sealed with flange gaskets to prevent spray water and flue gas from leaking from the top gaps. In the low-temperature conditions of northern winters, a heat tracing insulation layer is added to the cooling water circuit of the liquid cooling module, an electric heat tracing cable is added to the cleaning water pipeline, and a heating device is installed at the drain outlet at the bottom of the equipment to prevent the cooling water and cleaning water from freezing and clogging the pipeline, ensuring stable operation in winter.

[0040] In this invention, the complete implementation process for fully automated coordinated operation of the entire machine is as follows: After the equipment is connected to the flue gas duct, cooling water circulation system, cleaning water supply system, and electronic control microcontroller terminal, it enters a fully automatic continuous operation mode. Moist and dusty flue gas enters the diversion base 7 through the bottom sealed end cover 8. As it flows through the square hole 72, it impacts the high-frequency vibrating spring 73, generating primary pre-vibration, breaking up large particle agglomerates and carrying vibration waves upwards. The flue gas is evenly distributed to the upper and lower micro-tube vibration units 3, entering the radially arranged micro-separation tubes 35. The spiral blades force the flue gas to rotate and centrifuge, causing droplets and dust to collide with the tube wall, completing the initial separation. The hub motor 333 drives the eccentric wheel 332 to continuously vibrate at high frequency, which, combined with the resonance effect of the diversion base, shakes off the deposits on the tube wall. Simultaneously, the flue gas thrust drives the spherical integrated module 31 to slowly rotate. The process achieves uniform self-cleaning of all micro-separation tubes. The separated flue gas rises through the liquid-cooled module's speed-up tube 53, where the cooling water chamber cools the gas and condenses it into tiny droplets, further improving the separation effect. The speed-up tube's built-in dust concentration sensor monitors the outlet flue gas indicators in real time. If the concentration exceeds the standard, the microcontroller terminal automatically increases the vibration frequency of the vibrating ball and simultaneously activates the high-pressure cleaning water path. The nozzle 4 sprays downwards to rinse all spherical units, flushing the detached dust and waste liquid to the bottom base, where it is discharged from the bottom drain channel. The cleaned flue gas finally passes through the exhaust port 23 of the end cover 2 and is discharged outwards. The entire process requires no manual intervention; vibration, cooling, spraying, and monitoring are linked and controlled, completely solving the technical problems of severe clogging, incomplete cleaning, and rapid decline in separation efficiency in traditional microtube bundle demisters. The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A microtube vibration type spherical demister, characterized in that, include: An outer mounting ring (1) is provided with a demisting filter element (6) inside. The bottom end of the outer mounting ring (1) is provided with a sealing end cap (8) and the top end cap (2) is provided. Several microtube vibration units (3) are densely arranged in two layers on the upper and lower end faces of the demisting filter element (6). Each microtube vibration unit (3) is suitable for free rotation and generates high-frequency vibration. The liquid cooling module (5) is connected to the demisting filter element (6) at the bottom and to the end cap (2) at the top. The liquid cooling module (5) is connected to an external water source and is adapted to spray water upward through the end cap (2). The drainage base (7) is located inside the outer mounting ring (1) and is disposed between the demisting filter element (6) and the sealing end cap (8); The smoke and dust are accelerated into the microtube vibration unit (3) inside the demisting filter element (6) through the flow base (7), and after being collected inside the microtube vibration unit (3), they flow out through the liquid cooling module (5).

2. The microtube vibration type spherical demister as described in claim 1, characterized in that, The microtube vibration unit (3) includes: The spherical integrated module (31) has a fixed shaft tube (32) at its axis, and the shaft tube (32) is rotatably disposed inside the demisting filter element (6); The vibrating ball (33) has a rotary joint (36) arranged on its outer axis. The rotary joint (36) is slidably inserted into the shaft tube (32), and a spring (34) is sleeved on the rotary joint (36). One end of the spring (34) abuts against the vibrating ball (33), and the other end abuts against the inner wall of the ball integrated module (31). Several micro-separation tubes (35) are inserted radially and uniformly into the outer surface of the spherical integrated module (31); The nominal diameter of the micro-separation tube (35) is usually no more than 100 mm, and it is equipped with spiral blades inside.

3. A microtube vibration type spherical demister as described in claim 2, characterized in that, The vibrating ball (33) includes a fixed shaft (331), an eccentric wheel (332), a hub motor (333), and a spherical shell (334). The fixed shaft (331) is fixedly installed inside the spherical shell (334), and the fixed shaft (331) is located at the axis of the spherical shell (334). A hub motor (333) is mounted on the fixed shaft (331), and the hub motor (333) drives the eccentric wheel (332) to rotate around the fixed shaft (331).

4. A microtube vibration type spherical demister as described in claim 1, characterized in that, The outer mounting ring (1) includes a receiving sleeve (11), a flange ring (12) and a countersunk hole (13). The upper and lower ends of the receiving sleeve (11) are provided with countersunk holes (13), and the middle part of the receiving sleeve (11) is provided with a flange ring (12).

5. A microtube vibration type spherical demister as described in claim 3, characterized in that, The demisting filter element (6) includes: The upper mounting plate (61) has multiple conductive grooves (65) arranged parallel to each other on its upper end surface, and a lower mounting plate (62) is symmetrically arranged below the upper mounting plate (61). A number of ball grooves (63) are evenly arranged between two adjacent conductive grooves (65). Each ball groove (63) has a pair of shaft grooves (64) at both ends, and the pair of shaft grooves (64) intersects with the two adjacent conductive grooves (65). The lower mounting plate (62) and the upper mounting plate (61) have the same structure and are connected through the ball groove (63). A conductor for connecting to the power supply is embedded in the conductive groove (65). A shaft tube (32) is rotatably arranged in the ball groove (63). The conductor is adapted to supply power to the hub motor (333) through the shaft tube (32).

6. A microtube vibration type spherical demister as described in claim 5, characterized in that, The end cap (2) includes a cover body (21), a water inlet pipe (22) and a smoke outlet (23). The top of the liquid cooling module (5) is sealed with the cover body (21). The end face of the cover body (21) is provided with a plurality of smoke outlets (23). The plurality of smoke outlets (23) pass through the liquid cooling module (5) and are aligned with the plurality of ball grooves (63). The cover (21) is provided with multiple nozzles (4) facing upwards. The nozzles (4) are connected to the liquid cooling module (5). The liquid cooling module (5) is connected to the water inlet pipe (22). The water inlet pipe (22) is installed downwards on the cover (21).

7. A microtube vibration type spherical demister as described in claim 6, characterized in that, The liquid cooling module (5) includes: The liquid cooling shell (51) has a mounting hole (54) on the top, and the liquid cooling shell (51) is sealed to the end cap (2) through the mounting hole (54); A number of speed-increasing tubes (53) are integrally formed and connected to the liquid cooling shell (51). The speed-increasing tubes (53) are aligned with a number of ball grooves (63). A guide hole (52) is provided between two adjacent speed-increasing tubes (53). The guide hole (52) is connected to the water inlet pipe (22). There is a gap between the liquid cooling shell (51) and several speed-increasing tubes (53), and the flow guide hole (52) is connected to the nozzle (4) through the gap.

8. A microtube vibration type spherical demister as described in claim 7, characterized in that, Each of the speed-increasing tubes (53) is equipped with a dust concentration sensor, which is connected to the microcontroller terminal.

9. A microtube vibration type spherical demister as described in claim 5, characterized in that, The drainage base (7) includes a base (71), square holes (72), high-frequency vibration springs (73), and drainage grooves (74). The base (71) is provided with a plurality of square holes (72), and the plurality of square holes (72) are aligned with the plurality of ball grooves (63). A high-frequency vibrating spring (73) is installed diagonally inside a single square hole (72). After the flue gas passes through the high-frequency vibrating spring (73), it generates high-frequency vibration and resonates with the vibrating ball (33).

10. A microtube vibration type spherical demister as described in claim 1, characterized in that, The demisting filter element (6) is made of stainless steel.

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